Reddit mentions of Star Wars Darth Vader 3D Sculpture Puzzle

I've seen a lot of people use this technique to do scale models of mountains. It's super easy too, because you can just trace the contour lines off of any topological map. The Boston museum of science used this technique to make a giant model of Everest with a line showing the path the climbers take.

You could also make one of these http://www.amazon.com/gp/customer-media/product-gallery/B000PG2DFO/ref=cm_ciu_pdp_images_0?ie=UTF8&index=0&isremote=0

Dang, it's $60 on Amazon.

Cool, I have one of these, it's one of those 3d puzzles. Mine unfortunately was missing some pieces when I bought it.